15 yr old sister's sext causing mental scarring

[Anon703]

I know that this is bizarre but my 15 year old older sister left her phone on the counter and I saw one of her conversations with her boyfriend and he asked for her to send nudes and she said okay and this is not very like her because it has taken her 3 years to even kiss him and they go to differnt schools so not much is happening and I want to address this to her but I know it will be awkward and we have a very close relation ship  so it will damage that and we will not be able to look at each other the same way I'm feeling very sick to my stomach and mentally scarred and very anxious, I can't look at her the same way but do I tell her off or leave it, I want her to understand that she shouldn't and that it is illegal but I would know that if somthing like that happened to me I would be very embarrassed but even tho I am younger than her I am more mature about a subject like the following. I know that some family member get walked in on doing the deed but the person doing so gets to feel the shame for what wrong doings they have committed but since I am the only one who knows what do I do? This might not seem like a big deal but I am stuggling to absorb this and it is effecting me mentally.

[mynameisNoelle]

Hello Anon703, my name is Noelle. I am 14 years old, I am sorry to hear about this uncomfortable experience. I do think that you should confront her on the matter and share your feelings on the subject. However, if you do talk to her try not to make it sound like you are attacking her- just let her know that you love her and you are concerned about her. Just know that sometimes people make mistakes, relationships can be complicated. Be compassionate and understanding. Good luck.

[michigan07]

Depending on your relationship with your sister you could sit down with her and see how she is doing and if anything is going on in her life. Unfortuently, technology has allowed for people who are too young to engage in this behavior. At the same time your sister is young and not yet mature and assuming her boyfriend is around the same age are curious about their sexuality. Also remember you are not the parent and though you love your sister it is a parental obligation to discuss such issues. All in all I would just see if something is up but if your concern won't dissipate telling your parents might need to be done and hopefully they can approach the issue without implicating you or what you saw.