I think just like Jalaal understand he is falling for Jodha, Ruqu also doesn't know she loves Jalaal want him as a husband.Till now Jalaal allways shared everything with her and given her the aauda and powers to maintan hareem. Till now she didn't missed him, as he was not attracted to anywife, and also none have talent to stand before her.
But with Jodha, Jalaal is pulling towards her, he first time told her, he slept night with her and later releaved he didn't. Now he is giving importance to Jodha, and she verywell knows there is not husband-wife relationship between them. When JJ get close, she may feel isolated and loney, that time she will feel her love for him, not as a friend, but as a husband and will want his love, but Jalaal heart will be occupied by Jodha. Jalaal will be in pain unable to share his feelings to Ruqu nor Jodha.
Whatever may be Ruqu will surely understand and want Jalaal's happiness will bring JJ together.