What does 'me colocaba a su alcance' mean?
Google translate says it means 'i stand at your fingertips', but that doesn't sound right to me.

Question

Answer

It is not XD oh, google.

"Me colocaba a su alcance" means something like "I positioned/moved myself to his/her reach"
So basically the person moves to a place or position where the other person is able to reach him/her.

Maybe I over-explained XD but I wanted to be clear.

Answer

- Estoy a tu alcance 
- Me pongo a tu altura