No risk. From what you describe, the body fluid had countered a barier already - "The external environment". Be informed that even if your girl friend was infected at the first place and she used her infected vaginal secretion as lube to masturbate you, as soon as the virus was seperated from it's host and exposed to the external environment it had already been inactive to transmit HIV to you. Other STIs could be a concern though.
Fingering her was not a risk, no media for transmission.
I have one more question. If the girl is just infected (1weak-3month) virus concentration in her fluids is on very high level and it can be more dangerous, than after seroconversion? May be your words are concerned only to people who just had seroconversion?
NO. HIV is unable to reproduce outside its living host (unlike many bacteria or fungi, which may do so under suitable conditions), except under laboratory conditions, therefore, it does not spread or maintain infectiousness outside its host.