As said above, a presidential pardon is risky for old DT, as acceptance is effectively an admission of guilt, and those pardoned can be compelled to testify, as failure to do so would be contempt. Though of course the penalty for contempt is significantly lower than what she’s currently faced with.
In addition, anything that is being pursued by SDNY will be at state level, not federal, and the orangutan has no authority to offer or issue pardons for state level offences. Which may explain the ham-fisted effort to get rid of the SDNY chief prosecutor..