No. Your data lives in your Cortex and is sent to models only as context for your answers, under agreements that exclude training. Your brain makes your Heidi smarter, nobody else's.
This is the question every buyer should ask any AI vendor, and the answer here is unambiguous: no training on customer data, by Falkster or by the model providers Heidi calls, whose enterprise terms exclude it.
Heidi improving over time is a different mechanism: her memory grows and her corrections accumulate, per tenant. The model weights never absorb your knowledge.