u/Such_Scar5424

I have worked with 3 PIs during my undergraduate and the one I worked with first (my first experience with research in general) I have a rocky relationship with when deciding to leave the lab (was in the lab for roughly a year).

After my departure, she did write me a rec letter for a grad scholarship and I was told that all my rec letters were stellar when receiving committee feedback, so I don’t think it would be actively bad.

However, I believe my other two letters of recommendation from the other PIs where I’ve also had more output will be strong and talk about my aptitude and passion for research so I’m not sure if it will add anything. But would it be a red flag to not include at all?