If there was one thing that she had learned then it was not to expose herself too much.
Too much information being known could be fatal to her so it could not be done.
The way she approached Eric would not work for others who were far more cautious and had less to lose.
It only worked on Eric since he was in a lower position than the others and he was very determined to bring in Ash despite there being risks involved.
If he was a little more careful then her location would be discovered or worse.
That was the reason why she could not risk using the same method she used previously even if it was successful.
There would always be a chance of traces being left behind or someone saying something to someone else before they suddenly went missing.
If Ash was looking for prey among the Rose Street Gang, the best location to take her time with them was on home ground that was familiar to her and was cut off from the outside world.