How do I ease back into honoring Hecate with hardly any space?

You don't need to rebuild your old practice all at once, or have an altar at all. You could start with a quiet moment, a short prayer, or reading about Hecate when you have privacy. Keep it small enough that it feels welcoming rather than like another obligation.

For the space issue, think portable instead of permanent. A small box or pouch could hold a candle, a written prayer, or another meaningful item, then be put away when you need the room. Even a single object you can keep privately might be enough for now.

And if having visible devotional items at home would feel uncomfortable or unsafe, there's no need to display them. Your practice can be private.

Since difficult things happened, I'd give yourself permission to go slowly. Maybe spend a little time reflecting on what drew you to Hecate before, and what feels right now. If anything starts feeling overwhelming, pause. Reconnecting doesn't have to mean returning to the exact practice you had before.