Had an argument with a former plate a couple months a go and decided to tell her I wasn't interested in drama, and went no contact on her.

There had been no contact between us since - until a few hours a go, when I received a missed Facetime call from her (but only 1/2 rings then stopped). I would like to have another crack with her as the sex was good. But do I bite on this breadcrumb and message/call back or should I rather only wait until I receive a proper message or call (if at all)?