Using sex toys?… confusing and a little frustrating!!!

Ok so I’m just going to spill and I hope it make sense not sure when and why it started happening but as per normal my gf now ex go to bed everything normal then say after an hour or two I feel vibrating coming from her body and constant and the I hear a click it changes I can guess what it is but don’t want to believe it anyway…

Happens a few nights but not every and then before this when we spoke about masturbating she lied to me she doesn’t masturbate…

But also what I can’t figure or may have but if there’s someone who can enlighten me about this?

In the middle of the night or if I come home late!! or Watever 9/10 I hear a bird will chirp 3 - 5

And sometimes she breaths like low and slow then assuming orgasm and yeah